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In biochemical reactions, enzymes are typically represented by larger protein molecules that facilitate the conversion of substrates into products. The enzyme itself remains unchanged after the reaction and can be reused. The product is usually depicted as the smaller molecule or molecules that are formed as a result of the enzyme's action on the substrate. To identify these in a specific reaction, look for the labeled structures in the reaction diagram or description, where the enzyme is often shown at the beginning or alongside substrates, and the product is shown at the end.
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How pro duct concentration affect enzyme activity?
Increasing substrate concentration can initially increase enzyme activity as more substrate molecules are available for the enzyme to bind to. However, at a certain point, the enzyme becomes saturated with substrate molecules and enzyme activity levels off. Very high substrate concentrations can also lead to competitive inhibition or product inhibition which can inhibit enzyme activity.
Is it true that after the product of an enzyme-catalyzed reaction leavesthe active site the enzyme can no longer react with more substrate?
No, after the product of an enzyme-catalyzed reaction leaves the active site, the enzyme can still react with more substrate to continue catalyzing the reaction. The enzyme is not altered or used up in the reaction, so it can continue to bind to and catalyze additional substrate molecules.
During enzme-catalyzed actions substrate is a synonym for?
In enzyme-catalyzed reactions, the term "substrate" is synonymous with the molecule or molecules that the enzyme acts upon to produce a reaction. It is the specific substance upon which an enzyme acts to produce a product.
What is a substrate .?
A substrate molecule hydrogen bonds to the active site on an enzyme and causes it to distort. The distortion stresses a bond in the substrate, causing it to break into two product molecules. These are released by the enzyme and drift away.
What name is given to the molecules made in an enzyme controlled reaction?
The molecules made in an enzyme-controlled reaction are usually referred to as products. These products are the result of the substrate molecules being transformed by the enzyme during the reaction.
What is the significance of the parameter kcat in enzyme kinetics?
The parameter kcat in enzyme kinetics represents the turnover number, which is the rate at which an enzyme can convert substrate molecules into product molecules. It is a crucial factor in determining the efficiency of an enzyme and its catalytic activity.
What is a mechanism by which a single hormone molecule can trigger the production of millions of molecules of a metabolic product?
enzyme
What enzyme is responsible for cutting DNA molecules?
The enzyme responsible for cutting DNA molecules is called a restriction enzyme.
What is the enzyme product for carbohydrase?
The enzyme product for carbohydrase is the breakdown of carbohydrates and sugars into simpler molecules like glucose. This process helps in the digestion of starches and sugars in the body for energy production.
How pro duct concentration affect enzyme activity?
Increasing substrate concentration can initially increase enzyme activity as more substrate molecules are available for the enzyme to bind to. However, at a certain point, the enzyme becomes saturated with substrate molecules and enzyme activity levels off. Very high substrate concentrations can also lead to competitive inhibition or product inhibition which can inhibit enzyme activity.
What is catalytic constant?
Kcat : First-order rate constant (kcat) reflecting the turnover number of the enzyme, or the number of molecules of substrate converted to product per unit time, when the enzyme is working at maximum efficiency, which called also turnover number. Kcat = Vmax / [E]total (Letian) Kcat : First-order rate constant (kcat) reflecting the turnover number of the enzyme, or the number of molecules of substrate converted to product per unit time, when the enzyme is working at maximum efficiency, which called also turnover number. Kcat = Vmax / [E]total (Letian)
What is Kcat?
Kcat is the catalytic efficiency of an enzyme, representing how many substrate molecules an enzyme can convert to product per unit time at a particular enzyme concentration. It is a measure of the enzyme's turnover rate.
What happens to the reaction rate as the enzyme concentration is increased?
As enzyme concentration increases, the reaction rate usually increases because there are more enzyme molecules available to catalyze the reaction. This is because enzymes can bind to more substrate molecules simultaneously, leading to a greater frequency of successful collisions and faster conversion to product. However, once all substrate molecules are bound to enzymes (enzyme saturation), further increases in enzyme concentration will not significantly affect the reaction rate.
An excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway?
Feedback Inhibition
What is the relationship between the turnover number (kcat) and the Michaelis constant (Km) in enzyme kinetics?
In enzyme kinetics, the turnover number (kcat) and the Michaelis constant (Km) are related in a way that affects the efficiency of an enzyme. The turnover number (kcat) represents the maximum number of substrate molecules that an enzyme can convert into product per unit time when the enzyme is fully saturated with substrate. The Michaelis constant (Km) is a measure of the affinity of an enzyme for its substrate, indicating how easily the enzyme can bind to the substrate. The relationship between kcat and Km is important because it determines the efficiency of an enzyme. Generally, a lower Km value indicates a higher affinity of the enzyme for its substrate, meaning that the enzyme can bind to the substrate more easily. On the other hand, a higher kcat value indicates a faster rate of catalysis, meaning that the enzyme can convert substrate into product more quickly. In summary, a lower Km and a higher kcat value are desirable in enzyme kinetics as they indicate a higher efficiency of the enzyme in converting substrate into product.
Is it true that after the product of an enzyme-catalyzed reaction leavesthe active site the enzyme can no longer react with more substrate?
No, after the product of an enzyme-catalyzed reaction leaves the active site, the enzyme can still react with more substrate to continue catalyzing the reaction. The enzyme is not altered or used up in the reaction, so it can continue to bind to and catalyze additional substrate molecules.
IS FAT A HORMONE OR ENZYME?
No it is not a hormone or an enzyme. It is a type of molecules
